Methane production system based on recyclable composite mediator enhanced anaerobic digestion

A technology of anaerobic digestion and composite media, which is applied in the direction of gas production bioreactors, special-purpose bioreactors/fermenters, biochemical instruments, etc., and can solve the problems of difficult enrichment of AQS, secondary pollution, loss of environment, etc. , to achieve the effects of reducing energy consumption, saving costs, and enriching the preparation materials

Inactive Publication Date: 2022-07-01
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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Problems solved by technology

[0005] The present invention intends to provide a methane production system based on recyclable composite mediator enhanced anaerobic dige...

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  • Methane production system based on recyclable composite mediator enhanced anaerobic digestion

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Embodiment

[0023] as attached figure 1 A methane production system based on enhanced anaerobic digestion of recyclable composite mediators is shown, including a biochar preparation unit 1 for producing biochar and an impregnation device 20 connected to the biochar preparation unit 1, and the biochar preparation unit 1 Biochar is prepared by high-temperature pyrolysis, and the pyrolysis temperature is between 500 °C and 600 °C. The raw materials of biochar can be selected from agricultural wastes such as crop straw, and the biogas residue treated by the solid-liquid separation unit in this scheme. The waste is fully utilized, and the biochar prepared by the biochar preparation unit 1 is sent to the impregnation device 20 for mediator loading, and the pyrolysis waste heat is stored in the heat storage device 2 . The biochar preparation unit 1 transports the prepared biochar into the impregnation device 20 through a transport pipe.

[0024] The top of the dipping device 20 is provided with...

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Abstract

The invention discloses a methane production system based on recyclable composite mediator enhanced anaerobic digestion, and particularly relates to the technical field of biological fermentation. Comprising a charcoal preparation unit and an impregnation device, a stirring device is arranged in the impregnation device, an impregnation solution is an anthraquinone-2-sodium sulfonate solution, an anaerobic digester is connected to the impregnation device, a partition plate with a gas inlet is arranged in the anaerobic digester, the anaerobic digester is connected with a gas collection pressure regulating tank located above the gas inlet, and the gas collection pressure regulating tank is connected with a gas storage tank located above the gas inlet. The gas collection pressure regulating tank is communicated with a biogas preheating pipe, a heat storage device is coated outside the biogas preheating pipe, the biogas preheating pipe is connected with a pneumatic stirring device positioned in the anaerobic digester through a gas guide pipe, and the pneumatic stirring device consists of a gas channel and a plurality of one-way gas nozzles arranged on the gas channel at intervals; and the side wall of the lower part of the anaerobic digester is connected with a magnetic recovery device. By adopting the technical scheme of the invention, the problems that AQS is difficult to enrich and is easy to lose along with wastewater to cause secondary pollution to the environment are solved, and reutilization of resources can be realized.

Description

technical field [0001] The invention relates to the technical field of biological fermentation, in particular to a methane production system based on a recyclable composite mediator for enhanced anaerobic digestion. Background technique [0002] my country is a big country in agricultural production, and a large amount of agricultural organic waste produced every year is a renewable resource with great development potential, of which crop straw accounts for a large proportion. 7.31, it can be seen that the amount of crop straw resources is huge. However, there are still a lot of straws that have not been effectively disposed and utilized in agricultural production, resulting in serious environmental pollution caused by the disposal and incineration of organic wastes in agricultural production in my country. The problem of serious waste of organic waste resources. [0003] Anaerobic digestion technology is an effective technology for recycling, reducing and harmless utilizatio...

Claims

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Application Information

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IPC IPC(8): C12M1/107C12M1/02C12M1/38C12M1/00
CPCC12M21/04C12M25/14C12M27/02C12M41/20
Inventor 赵立欣张玉磊姚宗路马俊怡于佳动申瑞霞罗娟
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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